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// (C) Copyright Gennadiy Rozental 2005-2008.
// Use, modification, and distribution are subject to the
// Boost Software License, Version 1.0. (See accompanying file
// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
// See http://www.boost.org/libs/test for the library home page.
//
// File : $RCSfile$
//
// Version : $Revision: 54633 $
//
// Description : implements parser - public interface for CLA parsing and accessing
// ***************************************************************************
#ifndef BOOST_RT_CLA_PARSER_IPP_062904GER
#define BOOST_RT_CLA_PARSER_IPP_062904GER
// Boost.Runtime.Parameter
#include <boost/test/utils/runtime/config.hpp>
#include <boost/test/utils/runtime/trace.hpp>
#include <boost/test/utils/runtime/argument.hpp>
#include <boost/test/utils/runtime/cla/argv_traverser.hpp>
#include <boost/test/utils/runtime/cla/parameter.hpp>
#include <boost/test/utils/runtime/cla/modifier.hpp>
#include <boost/test/utils/runtime/cla/validation.hpp>
#include <boost/test/utils/runtime/cla/parser.hpp>
// Boost.Test
#include <boost/test/utils/basic_cstring/io.hpp>
#include <boost/test/utils/foreach.hpp>
// Boost
#include <boost/lexical_cast.hpp>
namespace boost {
namespace BOOST_RT_PARAM_NAMESPACE {
namespace cla {
// ************************************************************************** //
// ************** runtime::cla::parser ************** //
// ************************************************************************** //
BOOST_RT_PARAM_INLINE
parser::parser( cstring program_name )
{
assign_op( m_program_name, program_name, 0 );
}
//____________________________________________________________________________//
BOOST_RT_PARAM_INLINE parser::param_iterator
parser::first_param() const
{
return m_parameters.begin();
}
//____________________________________________________________________________//
BOOST_RT_PARAM_INLINE parser::param_iterator
parser::last_param() const
{
return m_parameters.end();
}
//____________________________________________________________________________//
BOOST_RT_PARAM_INLINE argument const&
parser::valid_argument( cstring string_id ) const
{
const_argument_ptr arg = (*this)[string_id];
BOOST_RT_PARAM_VALIDATE_LOGIC( !!arg, "Actual argument for parameter " << string_id << " is not present" );
return *arg;
}
//____________________________________________________________________________//
BOOST_RT_PARAM_INLINE parser&
parser::operator<<( parameter_ptr new_param )
{
BOOST_TEST_FOREACH( parameter_ptr, old_param, m_parameters ) {
BOOST_RT_PARAM_VALIDATE_LOGIC( !old_param->conflict_with( *new_param ),
BOOST_RT_PARAM_LITERAL( "Definition of parameter " ) << new_param->id_2_report() <<
BOOST_RT_PARAM_LITERAL( " conflicts with defintion of parameter " ) << old_param->id_2_report() );
}
m_parameters.push_back( new_param );
return *this;
}
//____________________________________________________________________________//
BOOST_RT_PARAM_INLINE void
parser::parse( int& argc, char_type** argv )
{
if( m_program_name.empty() ) {
m_program_name.assign( argv[0] );
dstring::size_type pos = m_program_name.find_last_of( BOOST_RT_PARAM_LITERAL( "/\\" ) );
if( pos != static_cast<dstring::size_type>(cstring::npos) )
m_program_name.erase( 0, pos+1 );
}
m_traverser.init( argc, argv );
try {
while( !m_traverser.eoi() ) {
parameter_ptr found_param;
BOOST_RT_PARAM_TRACE( "Total " << m_parameters.size() << " parameters registered" );
BOOST_TEST_FOREACH( parameter_ptr const&, curr_param, m_parameters ) {
BOOST_RT_PARAM_TRACE( "Try parameter " << curr_param->id_2_report() );
if( curr_param->matching( m_traverser, !found_param ) ) {
BOOST_RT_PARAM_TRACE( "Match found" );
BOOST_RT_CLA_VALIDATE_INPUT( !found_param, (m_traverser.rollback(),m_traverser), "Ambiguous input" );
found_param = curr_param;
}
m_traverser.rollback();
}
if( !found_param ) {
BOOST_RT_PARAM_TRACE( "No match found" );
BOOST_RT_CLA_VALIDATE_INPUT( m_traverser.handle_mismatch(), m_traverser,
BOOST_RT_PARAM_LITERAL( "Unexpected input" ) );
continue;
}
BOOST_RT_PARAM_TRACE( "Parse argument value" );
found_param->produce_argument( m_traverser );
m_traverser.commit();
}
BOOST_TEST_FOREACH( parameter_ptr const&, curr_param, m_parameters ) {
if( !curr_param->p_optional && !curr_param->actual_argument() ) {
curr_param->produce_argument( *this );
BOOST_RT_PARAM_VALIDATE_LOGIC( curr_param->actual_argument(),
BOOST_RT_PARAM_LITERAL( "Required argument for parameter " ) << curr_param->id_2_report()
<< BOOST_RT_PARAM_LITERAL( " is missing" ) );
}
}
}
catch( bad_lexical_cast const& ) {
BOOST_RT_PARAM_REPORT_LOGIC_ERROR(
BOOST_RT_PARAM_LITERAL( "String to value convertion error during input parsing" ) );
}
m_traverser.remainder( argc, argv );
}
//____________________________________________________________________________//
BOOST_RT_PARAM_INLINE const_argument_ptr
parser::operator[]( cstring string_id ) const
{
parameter_ptr found_param;
BOOST_TEST_FOREACH( parameter_ptr const&, curr_param, m_parameters ) {
if( curr_param->responds_to( string_id ) ) {
BOOST_RT_PARAM_VALIDATE_LOGIC( !found_param,
BOOST_RT_PARAM_LITERAL( "Ambiguous parameter string id: " ) << string_id );
found_param = curr_param;
}
}
return found_param ? found_param->actual_argument() : argument_ptr();
}
//____________________________________________________________________________//
BOOST_RT_PARAM_INLINE cstring
parser::get( cstring string_id ) const
{
return get<cstring>( string_id );
}
//____________________________________________________________________________//
BOOST_RT_PARAM_INLINE void
parser::usage( out_stream& ostr )
{
if( m_program_name.empty() )
assign_op( m_program_name, BOOST_RT_PARAM_CSTRING_LITERAL( "<program>" ), 0 );
format_stream fs;
fs << m_program_name;
BOOST_TEST_FOREACH( parameter_ptr const&, curr_param, m_parameters ) {
fs << BOOST_RT_PARAM_LITERAL( ' ' );
if( curr_param->p_optional )
fs << BOOST_RT_PARAM_LITERAL( '[' );
curr_param->usage_info( fs );
if( curr_param->p_optional )
fs << BOOST_RT_PARAM_LITERAL( ']' );
if( curr_param->p_multiplicable ) {
fs << BOOST_RT_PARAM_CSTRING_LITERAL( " ... " );
if( curr_param->p_optional )
fs << BOOST_RT_PARAM_LITERAL( '[' );
curr_param->usage_info( fs );
if( curr_param->p_optional )
fs << BOOST_RT_PARAM_LITERAL( ']' );
}
}
ostr << BOOST_RT_PARAM_CSTRING_LITERAL( "Usage:\n" ) << fs.str() << std::endl;
}
//____________________________________________________________________________//
BOOST_RT_PARAM_INLINE void
parser::help( out_stream& ostr )
{
usage( ostr );
bool need_where = true;
BOOST_TEST_FOREACH( parameter_ptr const&, curr_param, m_parameters ) {
if( curr_param->p_description->empty() )
continue;
if( need_where ) {
ostr << BOOST_RT_PARAM_CSTRING_LITERAL( "where:\n" );
need_where = false;
}
ostr << curr_param->id_2_report() << BOOST_RT_PARAM_CSTRING_LITERAL( " - " ) << curr_param->p_description << std::endl;
}
}
//____________________________________________________________________________//
} // namespace cla
} // namespace BOOST_RT_PARAM_NAMESPACE
} // namespace boost
#endif // BOOST_RT_CLA_PARSER_IPP_062904GER
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